Adrian: 1286? RE: [basicstamps] Re: Analog to Digital Converter
Archiver
Posts: 46,084
Hi Adrian, have you used the 1286, the 1298 with a vref you can get down to
1v? If not, have you been able to use a precsion voltage ref on the Vcc
line? If so, which did you use? Am struggling to find a good one. Appreciate
any response!
Regards
Rupert Hart
Original Message
From: Adrian Schneider [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=cf1D0A4JYHfGe2SKxtB4gREkUslNxRYC8IgpwZOB8cH4CIn8d42EkNA9eeUG9-qsNZn5qVG2LD52bh_B7HlI2tRl4sC7XmM]adrian.schneider@t...[/url
Sent: Wednesday, June 18, 2003 11:56 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: Analog to Digital Converter
Hello
1) Personally I found the LTC1298 12bit serial ADC easy to use.
There is a cheaper but similar alternative, the ADC0831 8bit ADC.
Both parts are available e.g. from the Parallax component shop,
accessories section.
2) Usually an ADC does not work as DAC, they are completely different
devices. Maybe there are some parts which incorporate both functions,
but I think this is the exception.
check out the link below for more info about the LTC1298:
http://www.parallax.com/Downloads/Documentation/app/kit/AppKit_LTC1298
_12-bit_A_to_D_Converter.pdf
Regards
Adrian
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
1v? If not, have you been able to use a precsion voltage ref on the Vcc
line? If so, which did you use? Am struggling to find a good one. Appreciate
any response!
Regards
Rupert Hart
Original Message
From: Adrian Schneider [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=cf1D0A4JYHfGe2SKxtB4gREkUslNxRYC8IgpwZOB8cH4CIn8d42EkNA9eeUG9-qsNZn5qVG2LD52bh_B7HlI2tRl4sC7XmM]adrian.schneider@t...[/url
Sent: Wednesday, June 18, 2003 11:56 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: Analog to Digital Converter
Hello
1) Personally I found the LTC1298 12bit serial ADC easy to use.
There is a cheaper but similar alternative, the ADC0831 8bit ADC.
Both parts are available e.g. from the Parallax component shop,
accessories section.
2) Usually an ADC does not work as DAC, they are completely different
devices. Maybe there are some parts which incorporate both functions,
but I think this is the exception.
check out the link below for more info about the LTC1298:
http://www.parallax.com/Downloads/Documentation/app/kit/AppKit_LTC1298
_12-bit_A_to_D_Converter.pdf
Regards
Adrian
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
Comments
I only used the 1298 so far and just with a regualr (2904-5V) albeit
well filtered power supply. Which is certainly a flaw of my circuitry.
However, using a prcision voltage could make sense wven with a 1298.
So far the 1298 was a good choice to me and it was easy to use.
The 1268 should be virtually the same. The reason why I used the
1298 in favor of the 1268 was but a question of availability.
In fact I would prefer the 1268 for its separate ref input.
Regards
Adrian